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Finding the Fourth Proportional to 612.61, 843.97 and 501.44

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Solution

The fourth proportional to 612.61, 843.97 and 501.44 is: 690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.61 : 843.97 = 501.44 : x
  2. Step 2: Convert to fraction form
    612.61/843.97 = 501.44/x
  3. Step 3: Cross multiply
    612.61x = 843.97 × 501.44
  4. Step 4: Simplify right side
    612.61x = 423,196.10
  5. Step 5: Solve for x
    x = 423,196.10/612.61
  6. Step 6: Final answer
    x = 690.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.